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Learners will investigate the reason for seasons on Earth. They will look at the circular orbit of Earth, year-long temperature and daylight hours across different latitudes, compare models of the Earth with and without tilt, investigate angle and... (View More) intensity of sunlight, and end with a discussion to solidify their understanding. The unit supports the process of modeling to determine an answer to a question. This is unit 2 of the GEMS Space Science Sequence for Grades 6-8, which is available for purchase (see related link). (View Less)
Learners will construct a model to show the relative size and scale of the Sun-Earth system, investigate the visible and electromagnetic spectrums, discuss solar flares and solar weather, develop a UV shield, and discuss the results of their... (View More) investigations. The unit is set in the context of solving a mystery and supports the idea that scientific explanations are based on evidence. This is Unit 1 of the GEMS Space Science Sequence for Grades 6-8, which is available for purchase (see related link). (View Less)